Analysis Of Combining Ability Of Agronomic Character And Quality Factors In Restorer-lines Indica

The hybrids made from 6 Restorer-lines Indica and 6 Indica Rice CMS Lines in 6×6 incomplete diallel pattern to evaluate their 8 agronomic character and their 7 quality characteristics.Analysis was made on heterosis, simple correlation, combining ability and heritability of their 8 agronomic character and combining ability of their 7 quality characteristics.The mainresults were as follows:1.In he correlation coefficient of the RLI hybrid agronomie traits, the GWP are related with PH, PP, FGP, SP and SSR, especially the related with PP and FGP were positively significant at 1% level, negatively correlated with PL and GW, but not significant. Yield on role of F1 for the PP>FGP>SSR>GW.2.Different characters in heterobeltiosis are difference between RLI,the average value of the F1S showed positive heterobeltios in PH, GW and GWP, and (significant) negative heterobeltiosis in the other characters. The highest heterobeltiosis appeared in PP and 6 RLI showed positive heterobeltiosis, heterobeltiosis among all strains of hybrid were quite different.3.The competitive edge were different between different RLI hybrid,different combinations of the same traits of competitive edge were also inconsistent. Deviation from 8 competitive advantage of the RLI, competitive advantage of each character in the hybrid combination of the difference between the large to small order is:GWP> FGP> SSR>PP>PH>SP>PL>GW. Except for SP and GW,the average value of other traits showed significant or highly significant negative competitiveheterosis.Nanhui 596 and Nanhui 16 showed negative compertitive heterosis appeared in GWP, and positive heterobeltiosis in the other characters.4.The competitive edge of GWP of RLI hybrid showed different from the different parent. Nanhui 596 and Nanhui plant 16 showed 4 numbers competitive edge of GWP and the competitive edge of GWP of Gufeng/Nanhui596 were 11.27. Most of the combination of GWP showed negative competitive advantage.5.GCA of Nanhui596, Nanhui 16 and Nanhui009 were relatively high, while the GCA of Nanhui225 and R1672 were the lowest.Combinations of NongtepuA/Nanhui009,GufengA/Nanhui596,NongtepuA/Nanhui596,II-32A/Nanhui596,NongtepuA/Na nhui938,GufengA/Nanhui16,NongtepuA/Nanhui16,Ⅱ-32A/Nanhui225, GufengA/Nanhui009, Gang46A/Nanhui 16, ShengfenglA/Nanhui16, Gang46A/Nanhui596 showed high SCA in GWP6.Except for SP, the correlation of other 7 traits between GCA effeet value and phenotypic value of parents was positive.Correlation of total GCA effeet value of parents and phenotypic value of hybrid progeny was positively significant at 1% level. And correlation of SCA effect value and phenotypic value of hybrid progeny was also positively significant at 1% level.7.Analysis and comparison of RIL of indica hybrid partial GCA variance in parental genotype proportion (VG1 and VG2). PP, PL, SP and GW of the paternal genotype variance of GCA variance in the proportion of large than the female parent, these characters have greater impact by the male parent. PH, FGP, GWP and SSR of the female parent plant were high contribution than the male parent, these characters have greater impact by the female parent.8.The h2B of six traits PH, PL,FGP, SP, GWP and SSR were generally high,which means they were main determinde by genotype effects.The order of the h2N from high to low was as follow: PH>FGP>GWP>SSR>PL>PP>SP>GWP. PH, FGP, GWP, SSR, PL, PP, SP were high h2N, they were subject to low environmental impact, GWP was low h2N,it was subject to high environmental impact.9. Variance GCA of quality factors showed that:all seven meters of quality trait additive gene effects more important than non-additive gene effect. Additive gene effects was different among different parents and different traits.10.Analysis and comparison of RIL of indica hybrid partial GCA variance in parental genotype proportion (VG, and VG2). MRL, L/W, MRR, HMRR CR and CA of the paternal genotype variance of GCA variance in the proportion of large than the female parent, these characters have greater impact by the male parent. BRR of the female parent plant were high contribution than the male parent, these characters have greater impact by the female parent.11.The h2B of six traits MRL, L/W, MRR, HMRR, CR and CA were generally high,which means they were main determinde by genotype effects.The order of the h2N from high to low was as follow: MRR>MRL>L/W>HMRR>CR>CA>BRR. MRR,MRL,L/W and HMRR were high h2N, they were subject to low environmental impact, CR, CA and BRR was low h2N, it was subject to high environmental impact.